Q02HCPU MITSUBISHI CPU UNIT MODEL MELSEC-Q JAPAN 5VDC 0.64A 17:05

• BRAND: MITSUBISHI
• MELSEC Q
• CPU UNIT MODEL
• MODEL: Q02HCPU
• MAX: 28Kstep
• 5VDC, 0.64A
• SERIAL: 130419131180027-B
• MITSUBISHI ELECTRIC
• MADE IN JAPAN

The Q02HCPU is a high-performance Process CPU from Mitsubishi Electric’s renowned MELSEC-Q series of programmable logic controllers (PLCs).

Key Features and Specifications:

• Model: Q02HCPU

• Series: MELSEC-Q Series

• Origin: Manufactured by Mitsubishi Electric in Japan.

• Power Supply: 5VDC. This is the internal operating voltage for the CPU’s logic circuits. *Important Note: This does NOT mean the main power for the entire base unit is 5VDC. The main power supply module (e.g., a Q61P-A or Q62P) that plugs into the base unit typically converts 100-240VAC or 24VDC down to this 5VDC for the CPU and other modules.*

• Current Consumption: 0.64A. This is the amount of current the CPU unit itself draws from the 5VDC backplane of the base unit. This is a critical specification for ensuring the power supply module you select can power the CPU along with all other I/O and special function modules in the rack.

Detailed Technical Description

The Q02HCPU is a central processing unit designed for medium to large-scale automation control systems.

1. Performance:

   • It was a high-end model in its time, offering fast program execution speeds and a large capacity for logic and data.

   • It is suitable for complex processes, sequence control, and data handling applications.

2. Program Capacity:

   • It has a large program memory capacity (typically 28 K steps, but can vary; please check the official manual for the exact figure), allowing for very extensive and complex control programs.

3. Functionality:

   • Supports structured programming (using Function Blocks, Structured Text, etc., in addition to Ladder Logic).

   • Capable of multi-task programming, allowing you to organize programs into independent tasks for easier management and debugging.

   • Features a built-in USB port (or possibly an RS-232 port, depending on the version) for connecting a programming computer (GX Developer or GX Works2 software).

4. System Configuration:

   • It is used in a rack-based (modular) system. You must install it into a MELSEC-Q series base unit (e.g., a Q33B or Q35B).

   • It controls and communicates with all the other modules (I/O modules, analog modules, network modules, etc.) installed in the same base unit or in extended base units via a special extension cable.

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Important Considerations & Status

• Legacy Product: The Q02HCPU is a discontinued/obsolete model. It has been superseded by newer generations like the MELSEC iQ-R Series and MELSEC iQ-F Series, which offer significantly higher performance, more features, and better connectivity.

• Replacement: If you are maintaining an old system, this is a critical spare part. If you are designing a new system, it is strongly recommended to use a current-generation CPU.

• Software: Programming is done with Mitsubishi’s GX Developer or the newer GX Works2 software (which supports legacy Q Series CPUs).